Bulk sample of dense juvenile clasts from 75 cm thick, lapilli fall deposit within 1931 sequence, about 150 feet below rim. This is near the top of the 1931 sequence, which is a rhythmic set of fall/surge packages.
The 1931 eruption of Aniakchak volcano, Alaska
This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G22AC00137
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.